Unit 6 Understanding ideas （ppt课件）--2023新外研版（2019）《高中英语》选择性必修第一册.pptx

1、Unit 6Nurturing nature-Understanding ideas1.Students could learn some words and phrases.2.Students could undestand the main idea of this passage.3.Students could write some sentences of this topic.Learning Aims:What is your understanding of the title？Share you ideas with others天空铁路 The Sky Railway1.

2、Tibet Which is the highest railway in the world?a The Trans-Siberian Railway.b The Qinghai-Tibet Railway.c The Chengdu-Kunming Railway Which of these stations is not on the Qinghai-Tibet Railway?a Lhasa.b Golmud.c Lanzhou.Which of these natural World Heritage Sites does the Qinghai Tibet Railway pas

3、s by?a Xinjiang Tianshan.b Qinghai Hoh Xil.c South China Karst.What is proved impossible by experts?travel along the railway.1 Sitting back in my seat,I cant quite believe that Im about to travel along the railway that many foreign experts claimed was“impossible”.The train has been racing along stea

4、dily since it left Xining.All this time,the song“Sky Railway”has been playing inside my head.The words“railways like massive dragons are winding among the mountains”seem particularly vivid as I travel across the“roof of the world”.Take notes quickly.重点词汇back in 返回;travel along 一起旅行;沿著has been 已经stea

5、dily 稳定地;railways 铁路;铁道;travel across 穿越;远涉roof of the world 世界屋脊;What was authors job?a worker who work on this railway.2 I was one of the people who came from all parts of China to work on this railway.Taking years to complete,the Qinghai-Tibet Railway is a record of all of our efforts to overcome

6、 the most difficult engineering challenges.How to protect the delicate ecosystem was among the top concerns.Take notes quickly.重点词汇one of 之一work on 对有效railway 铁路;铁道;铁路公司;overcome 克服;解决 delicate 鲜美的，清淡可口的;ecosystem 生态系统concerns 影响，牵涉 Where was the Qingshuihe Bridge bulit?It was built over permafrost3

7、 The first landmark to catch my eye is the splendid Qingshuihe Bridge,the worlds longest bridge built over permafrost.Look!A group of Tibetan antelopes is moving under the bridge,with some stopping to eat grass at their leisure.Thirty-three passages have been built under the railway to allow the ani

8、mals to move safely and freely in their natural habitat.Wild animals such as these Tibetan antelopes have now been using these passages for years.They seem totally unaware that we are speeding past at over 100 kilometres an hour.Take notes quickly.重点词汇my eye 我的眼睛permafrost 永冻土层;永冻层A group of 一组;一群an

9、telopes 羚;羚类动物;antelope的复数Thirty-three 三十三have been 来过Wild animals 野生动物;野兽such as 例如;等 What did we do to prevent the demage?675 bridges with a total length of about 160 kilometres were built between Golmud and Lhasa.4 To prevent damage to wetlands and grasslands,675 bridges with a total length of ab

10、out 160 kilometres were built between Golmud and Lhasa.We even moved 140,000 square metres of wetland to a new area in order to protect its distinct ecosystem.Take notes quickly.重点词汇wetlands 湿地;沼泽地;wetland的复数grasslands 草原;草地;草场;grassland的复数total length 全长;总长;kilometres 千米;公里;Lhasa 拉萨wetland 湿地;沼泽地in

11、 order to 为了;为了ecosystem 生态系统What is the meaning of the underlined word?建筑,修建;5 The journey has been flying by,and before I know it,we have reached Tanggula Station.Located at over 5,000 metres above sea level,this is the highest railway station in the world.In locations such as this,the thin air,ch

12、angeable weather and high levels of UV radiation presented perhaps the greatest challenge for railway workers.To make sure we stayed healthy,several oxygen-making stations were constructed.We were also able to enjoy regular breaks in lower areas.Take notes quickly.重点词汇railway station 火车站such as 例如;等

13、;thin air 稀薄的空气;changeable 可变的;易变的;可能变化的;常变的UV radiation 紫外线辐射;紫外辐射make sure 确保，务必，be able to 可以;有能力 流浪，漫步，徜徉6 As we pass Cuona Lake,I feel a sense of pride and achievement.Using thousands and thousands of sandbags,we built a twenty_x0002_kilometre wall along the lake to protect it from construction

14、 waste.Cuona Lake is so close to the railway that I want to reach out and touch its pale blue mirror-like surface.Water birds playing in the lake,and cattle and sheep wandering the grasslands bring the scenery to life.What is the meaning of the underlined word?Take notes quickly.重点词汇a sense of 感;的感觉

15、;观念thousands of 几千;成千上万sandbags 沙袋，沙包;kilometre 千米;公里construction waste 建筑垃圾;施工废弃物reach out 伸;伸手;伸向前;生长pale blue 淡蓝色;淡蓝Water birds 水鸟;水禽;It truly is an extraordinary“Sky Railway”7 The Qinghai-Tibet Plateau has been attracting peoples admiration for centuries.Now,thanks to our efforts,passengers from

16、 all over the country have been enjoying these magical landscapes.I am proud that we built our“impossible”railway,and did so with the care that the environment deserves.It truly is an extraordinary“Sky Railway”.Finishing!ChallengesSolutionsTo protect wild animals1._have been built under the railway

17、to allow the animals to 2._.3.To_675 bridges with 4._ were built between Golmud ang Lhasa.140,000 square meters of wetland were 5._ in order to protect its distinct ecosystem To make sure the workers stayed healthy6._ were constructed.The workers also enjoyed 7._ in lower areas.8.To_Thousands and th

18、ousands of sandbags were used to 9._ along the lake to 10._.move safely and freely in their natural habitatThirty-three passagesprevent damage to wetlands and grasslandsa total length of about 160 kilometresmoved to a new areaSeveral oxygen-making stationsregular breaksprotect Cuona Lakebuild a twen

19、ty-kilometre wallprotect it from construction wasteWhat is the writers purpose in writing the passage?A.To prove that humans can conquer nature.B.To highlight the amount of work required to build the Qinghai-Tibet Railway.C.To praise the workers efforts in building the Qinghai-Tibet Railway.Which words in the passage are used to describe the Qinghai-Tibet Railway?What other words could you think of to describe it?impossiblehighestextraordinarymiracle，great achievementWhich of the solutions are you most impressed by?Why?Try to think about othersQuestionTalk with others.1.2.3.Thank you!